Suction roll for paper-making machines



mag. 11, 192& 1,694,698

E. E. BERRY SUCTION ROLL FOR PAPER MAKING MACHINES Original Filed May 5, 1923 4 Sheets-Sheet l Dec. 11, 1928. 1,694,698

E. E. BERRY SUCTION ROLL FOR PAPER MAKING MACHINES Original FiiL ed May 5, 1925 4 Sheets-Sheet 2 J kgWMM w;

Dec. 11, 1928.

E. E. BERRY SUCTION ROLL FOR PAPER MAKING MACHINES Original Filed May 5, 1923 4 Sheets-Sheet I... all

I x U Dec. 11, 1928. 1,694,698

E. E. BERRY SUCTION ROLL FOR PAPER MAKING MACHINES Original Filed May 5, 1923 4 Sheets-Sheet 4 Patented Dec. 11, 1928.

UNITED STATES PATENT OFFICE.

EARL E. BERRY, OF IBELOIT, WISCONSIN, ASSIG-NOR TO IBELOIT IRON WORKS, 013

BELOIT, WISCONSIN, A CORPORATION OF WISCONSIN.

SUCTION ROLL FOR PAPER-MAKING MACHINES.

Application filed May 5, 1923, Serial No. 636,863.

My invention relates to suction rolls for pa er making machines.

ne of the objects of the invention is to provide a simple, practical and advantageous construction of suction roll and suction compartment or chamber therein.

Another object of the invention is to permit reduction of the size of the bearings of the suction roll, thereby reducing the frictional resistance and the cost thereof.

Another object of the invention is to permit adjustment ofthe suction compartment or chamber to the interior of thecylinder.

Another object of the invention is to arrange for flexible contact between the suc tion compartment and the interior of the roll.

Another object of the invention is to avoid increasing or affecting the friction between the suction roll and vacuum section or compartment therein by reason of the vacuum in the latter, and to permit adjustment of the vacuum compartment without friction of consequence against the cylinder.

Another object of the invention is to provide improved means for supporting the vacuum compartment in the roll, and also to make use of the roll shaft as a means of supporting the vacuum compartment.

In the accompanying drawings Fig. 1 is a longitudinal section of an end portion of a suction roll and suction box-therein embodying my invention;

Fig. 2 is a longitudinal section of the other end portion of the same;

Fig. 3 is an end view of the portion of the roll shown in Fig. 1;

Fig. 4 is an end view of the portion shown in Fig. 2;

Fig. 5 is a cross section taken on line 5'5 in Fig. 2;

Fig. 6 is a cross section taken on line 66 in Fig. 3;

Fig. 7 is a view similar to Fig. 3, but showing certain parts adjusted to a different position.

Referring to the drawings, I show a suction roll 1 having its cylindrical shell provided with perforations 22. The ends of this roll are provided with heads 3 having closing plates 44 with packing rings 5-5 and me tallic holding rings 6-6. The cylinder or roll 1 is mounted on a fixed tubular or hollow shelf 7, the heads 3 containing roller bearings 8-8 or other suitable anti-friction devices.

' The bearings 8 are held in position in recesses Renewed March 9, 1925.

or apertures in heads 3 by the end plates 4 and inner rings 9 and packing rings 10.

The tubular shaft 7 is mounted in turn on end pedestals 11 and 12. Said shaft 7 is secured to pedestal member 13 by a set screw 13, and is secured to pedestal 12 by a long bearing 12 and screws 12"12 The pedestal 11 is composed oftwo parts 13 and 14 arranged one above the other, as shown in Fig. 3. The lower pedestal portion 14 is mounted on a pivotal screw 15, about which said portion 14 may swing, so as to move it out from underneath the portion 13, putting it to one side as shown in Fig. 7 of the drawings.

A screw or bar 16 is pivoted by a pin 17 to a member 13, extending down to the ground or floor on which the machine is mounted and having its lower end provided with a screw cap 18. By turning the latter the member 13 may be elevated sufiiciently to permit the member 14 to be swung to one side. Then cap 18 may be turned so as to lower member 13 and roll it so that the same will be sus pended from the rear or other bearing of pedestal 12. Then screw bar 16 may be swung upwardly, as shown in Fig. 7 so as to permit a Fourdrinier wire to be slipped over the end of the roll. A suction chamber or compartment 20 is arranged within the roll 1, being extended lengthwise of the same below the upper portion of the roll, as shown in Figs. 1, 2 and 5. This suction chamber is formed by two parts, a lower fixed or rigid part 21, and an upper movable part 22 mounted on the part 21. Part 21 is secured as by screws 23 to the fixed shaft 7. The upper part 22 is secured to the lower part 21 by screws 24-24 which pass through flexible U shaped spring plates 25, the upper ends of which support movable members 26-26 having packing stri s 2727 in contact with the inner surface of the roll 1. A plate 27 is secured to lower suction chamber member 21 and extends up to one of the members 26, thereby making a tight joint between the movable parts of the stufling box, the suction drawing the plate against the same and thereby making a comparatively air tight joint, but not interfering with the movement of the upper or movable part. Plates 27" are arranged at the ends of the suction chamber or box (Figs. 1 and 2) so as to make tight joints at such ends, said plates being preferably ipoupted. on brackets 27 on the tubular Iriem-v out By this arrangement the upper members 2626 have a slight amount of play relatively to the lower member 21, thereby permitting adjustment of the upper part of the suction chamber to the interior of the roll for the purpose of overcoming unevenesses, mak ing a tight fit and so on. The interior 29 of suction chamber 20 has its air pressure re duced so as to form suction, as by having the interior 7* of hollow shaft 7 communicate with pressure reducing apparatus, as will be hereinafter described, and having an open ing or slot 30 affording communication between shaft interior 7 a and chamber interior 29. Interior 29 communicates through apertures 31 with space 32 by which the reduced air pressure or vacuum is communicated to roll apertures 2-2 for purposes well known in this art.

For the purpose of adjusting the upper or movable part of the suction chamber toward the upper surface of the roll with which it makes contact, and for holding it normally in contact and air tight position, I provide a series of lever arms 34 pivoted at 35 on cross members 36, and these lever arms have their ends 37 adapted to engage adjusting screws 38 on cross members 39 connecting side arms 22-22, which extend up to members 26-26. The lower ends of levers 34 have a loose or jointed connection by means of pins 40 and slots 41 with a longitudinally extending bar or rod 42 which extends within the fixed shaft 7 and projects at the left hand end thereof, Fig. 1. A spring 48 surrounds this projecting end and is provided with an adjustable nut 44 by which a constant tension may be applied to rod 42 and thereby applied to levers 3434 so as to" exert constant upward tension on screws 38-88 and thereby constantly and normally hold the upper part of the suction chamber in firm and tight contact with the under surface of the suction roll. The rod or bar 42 may be supported in bearing supports 46 secured to and hung from cross members 36.

As an arrangement for deckling to take care of difierent widths of paper, I show at each end of the roll 1 a threaded rod 48, one end of which is mounted in a support 46 and the other end of which projects through the end of the hollow shaft 7 and is provided with an adjusting nut 49. Upright arms or carriages 50 are mounted on threaded rods 48 and have threaded connection with same so that rotation of rods 48 will adjust members 50 lengthwise of the suction roll. Frames 51 are connected to arms 50 and carry packing rings 52 which are adjusted by adjustment of members 50 so as to vary the effective width of the suction roll and thereby accommodate different widths of paper.

Communication between the interior of the hollow shaft 7 and a pressure reducing apparatus so as to establish a vacuum or condition of low air pressure inside of said shaft, is established by means of a chamber 56 in the pedestal 12, said shaft having an aperture or slot 57 communicating with the chamber 56 and also having an opening 58 communicating or connected with suitable apparatus for producing a condition of low atmosphere pressure, such as a suction pump, so that in reality the shaft 7 forms an extension of the suction chamber. The aperture 57 is larger than the corresponding opening from the chamber 56 to allow suction chamber to be adjusted to different positions inside of the roll without cutting off communication with chamber 56.

It will be seen that a simple and practical arrangement of stufling box is provided which assures advantageous cooperation between the chamber and the roll, and also an adjustment between the two to provide for various contigencies is permitted. It will also be seen that the bearings of the roll are relatively small, the suction chamber although arranged within the roll not being arranged within the bearings for the same so that the size of the latter may be reduced. It will also be seen that there are other features of advantage and utility in the construction.

' Thus it will be seen that the vacuum cham-' ber or compartment has an outer portion having a flexible connection with the other or inn-er portion, so that the flexibly connected portion really floats and is not drawn against the roll surface by the vacuum.

It will be understood that changes and modifications may be made without departing from the spirit of the invention.

What I claim is:

1. The combination with a suction roll of a suction chamber arranged therein and having side walls contacting with and extending inwardly from the interior surface of the roll, said side walls having flexible buckled or bow-shaped portions permitting springlike contact between said walls and said roll.

2. The combination of a suction roll and a suction chamber therein, said suction chamber having substantially radially disposed side walls contacting with and extending inwardly from the interior surface of the roll, said walls having flexible buckled or bowshaped portions for permitting springlike contact between said walls and said roll.

3. The combination with a suction roll of a suction chamber arranged therein and having side. walls contacting with and extending inwardly from the interior surface of the roll, said side walls having flexible buckled ,or bow-shaped portions permitting springlike contact between said walls and said roll, and means for adjusting the pressure of contact between said walls and the roll interior.

4. The combination of a suction roll and a suction chamber therein, said suction chamber having substantially radially disposed side walls contacting with and extending inwardly from the interior surface of the roll, said walls having flexible buckled or howshaped portions for permitting springlike contact between said walls and said roll, and means for adjusting the pressure of contact between said walls and the roll interior.

5. The combination of a suction roll, a fixed shaft on which said roll is mounted, a suction chamber within the roll, said chamber being mounted on said shaft and having an adjustable portion adapted to make contact with the interior surface of the roll and means whereby said portion may be adjusted, said means comprising mechanism mounted within the roll and arranged to act upon said adjustable section, said mechanism comprising lever devices adapted to act upon the adjustable section at intervals and a device for actuating all of said lever devices.

6. The combination of a suction roll, a fixed shaft on which said roll is mounted, a suction chamber within the roll, saidchamher being mounted on said shaft and having an adjustable portion adapted to make contact with the interior surface of the roll and means whereby said portion may be adjusted, said means comprising mechanism mounted within the roll and arranged to act upon said adjustable section, said mechanism comprising lever devices adapted to act upon the adjustable section at intervals and a device for actuating all of said lever devices, said lever devices having adjustable connections with the adjustable section and the device for actuating said levers compris= ing a rod or bar extending longitudinally in the roll and having sliding connections with said levers.

7. The combination of a suction roll, a fixed shaft on which said roll is mounted, a suction chamber within the roll, said chamber being mounted on said shaft and having an adjustable portion adapted to make contact with the interior surface of the roll, means whereby said portion may be adjusted, said means comprising mechanism mounted within the roll and arranged to 'act upon said adjustable section, said mechanism comprising lever devices adapted to act upon the adjustable section at intervals and a de* vice for actuating all of said lever devices, said lever devices having adjustable connections with the adjustable section and the device for actuating said levers comprising a rod or bar extending longitudinally in the roll and having sliding connections with said lovers, the end of said rod or bar projecting beyond the roll and having a spring tending to draw it so as to act normally against the lever devices and thereby force the adjustable suction chamber against the interior surface of the roll.

8. The combination with a suction roll of a suction chamber therein, said suction chamber having sides with flexible portions, the outer edges of which bear against the interior surface of the suction roll, and means extending exterior to the suction chamber and roll for adjusting the pressure of contact between said side walls and said roll.

9. The combination with a suction roll of a suction chamber therein, said suction chamber having side walls with flexible portions extending transversely of the interior of the roll and having their outer edges in contact with the inner surface of the roll, and means extending exterior to the suction chamber and roll for adjusting the pressure of contact between said side walls and said roll.

10. The combination with a suction roll of a suction chamber therein, said suction chamber having side walls arranged in a substantially radial manner with their outer edges in contact with the inner surface of the roll, said side walls havin flexible portions to permit. springlike adjustment between said walls and the interior of the roll, and means extending exterior to the suction chamber and roll for adjusting the pressure of Contact between said side walls and said roll.

11. The combination with a suction roll of a suction chamber arranged therein and having side walls contacting with and extending inwardly from the interior surface of the roll, said side walls having flexible buckled or bow-shaped portions permitting springlike contact between said walls and said roll,

and means extending exterior to the suction chamber and roll for adjusting the pressure of contact between said side walls and said roll.

12. The combination of a suction roll and a suction chamber therein, said suction chamber having substantially radially disposed side walls contacting with and extending inwardly from the interior surface of the roll, said walls having flexible buckled or bow-shaped portions for permitting springlike contact between said walls and said roll, and means extending exterior to the suction chamber and roll for adjusting the pressure of contact between said side walls and said roll.

13. The combination of :1 suction roll, a fixed shaft on which said roll is mounted. a suction chamber within said roll, said suction chamber comprising a fixed lower portion mounted on the shaft and an adjustable upper portion mounted on said fixed lower portion, said shaft being made tubular and having means for communication with the interior of said chamber and also means for communication with an air pressure reducing apparatus, said upper portion of said chamber comprising flexible members secured to the lower chamber portion and provided with packing strips adapted to contact with the interior surface of the roll, and a brace secured to the side of the fixed portion and extending up alongside the movable portion.

14. The combination of a suction roll, a fixed shaft on which said roll is mounted, a suction chamber within said roll, said suction chamber comprising a fixed lower portion mounted on the shaft and an adjustable upper portion mounted on said fixed lower portion, said shaft being made tubular and. having means for communication with the interior of said chamber and also means for communication with an air pressure reducing apparatus, said upper portion of said chamber comprising flexible members secured to the lower chamber portion and provided with packing strips adapted to contact with the interior surface of the roll, a brace secured to the side of the fixed portion and extending up alongside the movable portion, and lever devices for adjusting said movable portion, said lever devices being mounted on the fixed portion and having means of engagement with the flexible portion, and a movable member engaging said lever devices.

15. The combination of a suction roll, a fixed shaft on which said roll is mounted, a suction chamber within said roll, said suction chamber comprising a fixed lower portion mounted on the shaft and an adjustable upper portion mounted on said fixed lower portion, said shaft being made tubular and having means for communication with the interior of said chamber and also means for communication with an air pressure reducing apparatus, said upper portion of said chamber comprising flexible members secured to the lower cliamber portion and provided with packing strips adapted to contact with the interior surface of the roll, a brace. secured to the side of the fixed portion and extending up alongside the movable por; tion, and lever devices for adjusting said movable portion, said lever devices being mounted on 'the'fixed portion and having means of engagement with the flexible portion, and a movable member enga ing said lever devices, said movable memlier comprising a rod or bar extending lengthwise through said fixed shaft and projecting through the end thereof and having pin and slot connections with the lever devices and a spring for controlling said rod or bar.

16. The combination of a suction roll having its ends provided with heads, anti-friction bearings within said heads, a fixed tubular shaft on which said roll is mounted through the medium of said bearings, pedestals supporting the ends of said shaft, a suction chamber arranged within said roll between said bearings, said suction chamber comprising a fixed portion mounted on the shaft and an adjustable portion mounted on the fixed portion, lever devices connected with the adjustable portion of the chamber through the medium of adjusting screws, a bar or rod extending through the fixed shaft and having sliding engagement with the lever devices, said rod or bar extending out through one end of said shaft and a spring and adjusting nut on the projecting end of said rod or bar.

17. The combination of a suction roll, a shaft therefor and pedestals supporting the opposite ends of said shaft, one of said pedestals having an elongated bearing and the other being constructed of upper and lower sections whereof the lower section may be moved to one,side to form a space below the upper section.

18. The combination of a suction roll, a shaft therefor and pedestals supporting the opposite ends of said shaft, one of said pedestals having an elongated bearing and the other being constructed of upper and lower sections whereof the lower section may be moved to one side to form a space below the upper section, said lower section being pivotaily mounted at one side to permit its swinging movement.

19. The combination of a suction roll, a shaft therefor and pedestals supporting the opposite ends of said shaft, one of said pedestals having an elongated bearing and the other being constructed of upper and lower sections whereof the lower section may be moved to one side to form a space below the upper section, said lowersection being pivotally mounted at one side to permit its swinging movement, and a threaded pin pivotally mounted at the lower end of the upper section and having a threaded cap at its lower end, said cap being adapted to be screwed down upon the floor or other surface so as to elevate the upper section and the roll and thereby permit movement of the lower sec tion out of the way.

20. The combination with a suction roll of a suction chamber therein, said suction cham ber having side walls with buckled or bowshaped spring portions.

21. The combination with a suction roll, of a suction chamber therein. said suction chamber having side walls with spring-like flexible portions, means for adjusting said walls so as to control the contact pressure of the same with the roll, and spring means controlling said adjusting means and having tension-varying means exposed outside the suction chamber.

22. The combination with a suction roll, of a suction chamber therein, said suction chamber having side walls with bow-shaped or buckled flexible portions permitting springlike contact between said walls and said roll, means for adjusting the pressure of contact between said walls and said roll, said means including an adjustable rod arranged in the roll and projecting thru the end of the same,

and adjustable spring means on the projecting end of said rod.

23. The combination of a suction roll and a suction chamber therein said suction chamber having a movable outer portion, and a supporting wall provided with an inwardly facing surface upon which the air acts to press the outer portion of the suction chamber outwardly.

24:. The combination of a suction roll and a suction chamber therein, said suction chamber having an inwardly and outwardly movable outer portion and side walls supporting the same, said side walls being provided with flexible members having inwardly facing surfaces upon which the air may act to press said outer portion of the suction chamber outwardly against the roll surface.

25. The combination of a suction roll and a suction chamber therein, said suction chamber having an inwardly and outwardly movable outer portion and side walls supporting the same, said side. walls being provided with bent flexible members having inwardly facing surfaces upon which the air may actto press said outer portion of the suction chamber outwardly against the roll surface.

26. The combination of a suction roll, and a suction chamber therein, said suction chamber having an inwardly and outwardly movable outer portion and side walls supporting the same, said side walls being provided with spring members having inwardly facing surfaces upon which the air may act to press said outer portion of the suction chamber outwardly against the roll surface.

27. The combination of a suction roll and a suction chamber therein, said suction chamber having an inwardly and outwardly movable outer portion and also having supporting walls for said movable portion, said walls being provided with means whereby the air pressure may act outwardly to press said movable portion against the roll surface.

28. The combination of a suction roll and a suction chamber therein, said suction chamber having an inwardly and outwardly movable outer portion and also having supporting walls for said movable portion, said walls being provided with spring means whereby the air pressure may act outwardly to press said movable portion against the roll surface.

29. In a paper making machine, a suction roll consisting of a perforated cylinder having end heads and rotating on a hollow sta tionary shaft, said shaft extending through the heads of the roll and being supported by and secured in pedestals and being adapted to suspend the roll from one pedestal when the support of other pedestal is removed.

30. In a paper'making machine, a suction roll comprising a perforated cylinder mounted on a shaft, and supporting members at the ends of said shaft constructed and adapted to permit the roll to be suspended from and by one of said supporting memlfielrs to permit the application of the wire or 31. In a paper machine, a suction roll consisting of a perforated cylinder having end heads and rotating on a central shaft, said shaft extending through the heads of the roll in combination with bearing means for supporting the opposite ends of the roll, the bearing means at one end being removable to permit a wire to be slipped over the .roll and the bearing means at the other end and the central shaft being adapted to support the roll in a suspended position when the first bearing means is removed.

32. The con'i-binat-ion of a suction roll and a suction box or chamber therein, of bearing means at the opposite ends of the roll one of which is adapted to support the roll when the other end is unsupported and the other, of which has a movable portion removable of which has a movable portion removable from under the roll to permit the placing of a new wire over the roll and means located at the end having the movable bearing portion for elevating that end of the roll so as to permit or facilitate the removal of said movable bearing portion.

34. The combination of a suction roll and a suction box or chamber therein, of bearing structures for supporting the opposite ends of the roll, one of said bearing structures being elongated and the other being provided with upper and lower sections whereof the lower section may be moved to one side to form a space below the upper section.

35. The combination of a suction roll and a suction box or chamber therein, of bearing structures for supporting the opposite ends of the roll, one of said structures being elongated and the other being provided with upper and lower sections whereof the lower section is pivotally mounted at one side to permit it to be swung out.

from under the upper section.

36. The combination of a suction roll comprising a perforate cylinder and a suction box or chamber arranged therein and having an adjustable top, of meansfor making air tight joints between the ends of the top and bottom of said box or chamber, said means comprising plates extending crosswise of the ends of the box or chamber and closing the same.

37. The combination of a suction roll com- 5 prising a perforate cylinder and a suction box or chamber arranged therein and having an adjustable top, of means for making air tight joints between the ends of the top and bottom of said box or chamber, said means comprising plates extending crosswise of the ends of the box or chamber and closing the same, said plates being mounted on the bottom portion of the suction box or chamber.

In witness whereof, I hereunto subscribe my name this 23rd da of April, A. D. 1923.

ilARL E. BERRY. 

